POS auxiliary aviation image matching method

A matching method and aerial image technology, applied in the interpretation of photos, etc., can solve problems such as the difficulty of automatic processing of absolute orientation

Inactive Publication Date: 2009-06-24
WUHAN UNIV
View PDF0 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, the internal orientation and relative orientation of images have been fully automated using imag...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • POS auxiliary aviation image matching method
  • POS auxiliary aviation image matching method
  • POS auxiliary aviation image matching method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The concrete operation process of the inventive method is as attached figure 1 As shown, firstly, the epipolar line constraint equation is established by using the image orientation parameters provided by POS, and then the layer number formula of the image pyramid is established according to the point error and matching efficiency predicted by the POS data, and then the least squares matching is used to refine the rough image. The matching results and the selection iteration method are used to eliminate the wrong matching points.

[0047] (1) Establish the geometric constraint equation of the epipolar line with the same name

[0048] In digital image correlation, using the geometric constraint that the same-named image points must be located on the same-named epipolar line can change the two-dimensional image search into one-dimensional search, which can significantly improve the efficiency and reliability of image matching, and is often used in the automatic production...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a POS-aided method for matching aerial images, which comprises the following steps: firstly, utilizing an exterior orientation element obtained by the POS to construct a homonymous nucleofilament constraint equation and predict the initial parallax of an image; then, establishing an image pyramid according to the initial parallax and an approximate one-dimensional image correlation which carries out nucleofilament constraint layer by layer on the image of the pyramid; and finally adopting the matching of least-square images to confirm homonymous image points and pick mismatched points, thereby obtaining the homonymous image points of the images to be matched. The invention which adopts the POS-aided image matching method to automatically measure image points has the advantages that not only the application potential of the POS can be fully developed; but also the matching rate and the matching efficiency of automatically rotating points can be improved; and the problems that the rotating points of the images are so difficult to be matched that the rotating points are required to be measured manually and interactively are solved, for example, the rotational angles of certain images are too large, the image texture is not obvious, and the topographic relief is bigger.

Description

technical field [0001] The invention relates to a POS-assisted aerial image matching method, which belongs to the field of photogrammetry and remote sensing. Background technique [0002] At the end of the 1990s, aerial remote sensing began to use high-precision airborne positioning and orientation system (POS), which measured six orientation parameters of the image while acquiring the image, providing a new method for obtaining the external orientation elements of the image. , also brings new opportunities and challenges to simplify aerial photogrammetry operations. At present, the application research on POS mainly focuses on the direct ground target positioning and the up-down disparity analysis of the reconstructed stereo model. The research shows that the image orientation parameters obtained by using the POS system can meet the accuracy requirements of digital orthophoto map production, but using the reconstructed three-dimensional model to implement the placement ele...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01C11/04
Inventor 袁修孝季顺平吴珍丽
Owner WUHAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap